/**
* Execute a parse tree and return the result set or runtime error
*
* @param dcb The DCB that connects to the client
* @param tree The parse tree for the query
*/
void
maxinfo_execute(DCB *dcb, MAXINFO_TREE *tree)
{
switch (tree->op)
{
case MAXOP_SHOW:
exec_show(dcb, tree);
break;
case MAXOP_SELECT:
exec_select(dcb, tree);
break;
case MAXOP_FLUSH:
exec_flush(dcb, tree);
break;
case MAXOP_SET:
exec_set(dcb, tree);
break;
case MAXOP_CLEAR:
exec_clear(dcb, tree);
break;
case MAXOP_SHUTDOWN:
exec_shutdown(dcb, tree);
break;
case MAXOP_RESTART:
exec_restart(dcb, tree);
break;
case MAXOP_TABLE:
case MAXOP_COLUMNS:
case MAXOP_LITERAL:
case MAXOP_PREDICATE:
case MAXOP_LIKE:
case MAXOP_EQUAL:
default:
maxinfo_send_error(dcb, 0, "Unexpected operator in parse tree");
}
}
int
execute_work_queue (void)
{
union op *op;
int errors;
Bool update_map = False;
int dosync;
if (verbose) {
printf ("!\n");
printf ("! executing work queue\n");
printf ("!\n");
}
errors = 0;
dosync = 0;
for (op = work_queue.head; op; op = op->generic.next) {
if (verbose) print_opcode (op);
/* check to see if we have to update the keyboard mapping */
if (dosync &&
(dosync < 0 ||
op->generic.type != doKeycode ||
!op->keycode.target_keycode)) {
XSync (dpy, 0);
while (XEventsQueued (dpy, QueuedAlready) > 0) {
XEvent event;
XNextEvent (dpy, &event);
if (event.type == MappingNotify) {
/* read all MappingNotify events */
while (XCheckTypedEvent (dpy, MappingNotify, &event)) ;
XRefreshKeyboardMapping (&event.xmapping);
} else {
fprintf (stderr, "%s: unknown event %ld\n",
ProgramName, (long) event.type);
}
}
}
dosync = 0;
switch (op->generic.type) {
case doKeycode:
if (exec_keycode (&op->keycode) < 0) errors++;
if (op->keycode.target_keycode)
dosync = 1;
else
dosync = -1;
break;
case doAddModifier:
if (exec_add (&op->addmodifier) < 0) errors++;
else update_map = True;
break;
case doRemoveModifier:
if (exec_remove (&op->removemodifier) < 0) errors++;
else update_map = True;
break;
case doClearModifier:
if (exec_clear (&op->clearmodifier) < 0) errors++;
else update_map = True;
break;
case doPointer:
if (exec_pointer (&op->pointer) < 0) errors++;
break;
default:
fprintf (stderr, "%s: unknown opcode %d\n",
ProgramName, op->generic.type);
break;
}
}
if (update_map) {
if (UpdateModifierMapping (map) < 0) errors++;
}
return (errors > 0 ? -1 : 0);
}
